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(No Model.) COATES 3 Sheets-Sheet 1.

APPARATUS FOR THE MANUPAGTUR 0F SULPHATE 0F AMMONIA. No. 272,651. PatentedFehZO, 1883.

N. PErEns Phmwmhogn a 3 Sheets-Sheet 2.

J. GQATES. APPARATUS POR THE MANUFAGTURE 0F SULPHATE 0F AMMONIA.

(No Model.)

No. 272,651. Patented Peb.20, 1883.

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(No Model.) 3 Sheets-#Sheet 3.

J. OOATBS. APPARATUS PoR THB MANUPAGTURE 0F SULPHATB of' AMMONIA.

' No. 272,651. Patented Peb. 20,1883.

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, w A Il Il UNITED STATES JOHN UOATES, OF LONDON, ENGLAND.

APPARATUS FOR THE MANUFACTURE OF SULPHATE OF AMMONIA.

SPECIFICATION forming part of Letters Patent N o. 272,651, dated February 20, 1883.

Application filed October 9, 18S?. (No model.) Patented in England July i', 188:2, No. 3,214, and in France July 8, i889, 10.131838.

- To all whom t may concern Beitknown that I, JOHN GOATES, ot'London, England, have invented new and useful Improveniente in Apparatus used for the Manufacture of Sulphate ot' Ammonia, (for which I have made an application for a patent in Great Britain, No. 3,214, bearing date July 7, 1882, and an application for a patent in France, No. 137,838, bearing date July 8, 1882,)` of which the following is a speciticatiomreference being had to the accompanying drawings.

This invention has reference to the manufacture of sulphate of ammonia from ordinary gas-liquor, and has for its object the constrliction of apparatus whereby the whole of the ammonia may be extracted from such liquor withoutnuisance to the neighborhood or dangerto the workmemand, what is ofstill greater importance commercially, with 'a capability to produce al very white sulphate when brown or pyrites acid is used, thus dispensing with the necessity for the use of a purer, and therefore more costly, acid.

The invention consists in the construction of apparatus depicted in the drawings attached hereto, and of which the followingis a descrip` tion:

Figure l is a vertical sectional elevation through YZ of Fig. 3. Fig. 2 is a vertical sectional elevation through W X of Fig. 3, and Fig. 3 is a plan of the apparatus.

In each of the views similar letters refer to the same parts.

Referring to Fig. l, A is a gas-liquor storagetank capable ol' holding a months working.

B is a raised tank, made of cast-iron, into which the liquor is pumped from A, and is sutliciently large to hold two charges of the strong-liquor still G, into which the liquor gravitates through the pipe D till it reaches within about eighteen inches of the top of C.

E E are two coils heated by steam from the boiler F, and conveyed to them by the pipe G.

H is a pipe that leads from the catch-box g, Figs. 2 and 3, and carries'oft' the sulphuretedhydrogen gases through the condensing-pipes l, that may be laid in the bottom of the tank B, or exterior thereto, being ultimately led by the pipe J to an oxide-oiliron puritier.

K is the weak-liquor still-that is to say, the

still that receives the weak liquor through the. pipe L from the still C after the principal part -of the ammonia has been liberated from it in that vessel. The still K is also furnished with two wrought-iron steam-pipe coils, M M.

N, Fig. 3, is a. slaked-lime box, from which the still K is charged with lime in order to liberate the fixed ammonia.

O is a handle fixed to a spindle that, passes throughthe top ot the still K, and terminates in arms P, by the turning of which the lime mixture may be agitated with the contents of the still.

Q, is a'sludge pipe and cock, through which the mixture, alter parting with its ammonia, may be run into the spent-lime or settling tank It, made of brick. The stills are made ot' wrought-iron plates, arranged fora working pressure of eight pounds to the square inch, and are tted with gage-glasses SS to indicate the level of the liquor, test-cocks to ascertain its strength, safety-valves T T to relieve anyexcess ot' pressure, vacuum-cocks for use in running 0E the stills, man-holes for access to the interior, mud-holes for cleaning purposes, liquor inlet and outlet cocks, steam-inlet cocks to the coils, with waste-water outletpipes and self-acting water-traps; also, the l necessary vapor-outlet pipes and cocks U U. The size of the still may be such as will hold about two thousand two hundred gallons, but is not conlined to any particular' capacity. l

Referring now more particularly to Figs. 2 and 3,V is the acid store tank, from which the acid is raised by means ot" a Krtings blower to a closedandelevated acid-tank, a.. From thence the acid runs into a diluting-tank, b. A pipe, c, is used to convey the dilute acid to the saturators (l d, which are titted with lead test-plugs r. The vapor is conducted from the stills to the saturatoi's by means of cast-iron pipes c e, each terminating in a lead pipe carried through the top of the saturators, and forming into a single coil at the bottom. These coils have a series ot'small perforations, so that the vapor is split up into numerous jets.

fis a cast-iron pipe to carry oft the sulphureted-liydrogen vapors, carbonio acid, and uncondensed steam to the catch-box g, which is charged with acid in order to intercept any IOO e i 272,651l

ammonia that may have passed over with the vaporsjust mentioned. The pipef may, however, bet'ore reaching the catch-box, be passed through the strong-liquor still C, so that the hot gases Within it may help to heat the contents ofthe still. h h are settling-tanks, placed between the saturators and evaporating-pans it'. The settlings are drawn off' from the settling-tanks to the boiling-up tankj, where they are diluted with water and acted upon by steam to free any solution of sulphate they may contain.

t' t' are evaporating-pans, into which the solution from the settling-tanks is run by a movable spout, l, and concentrated by the application of steam passing through lead pipes m' at the bottom of the pan.

n n are draining-tables, onto which the crystals formed in the evaporating13ans are placed by means of a wooden shovel, the said tables being laid at an angle, so that the di-ippings may run back into the pan. \Vhen suiiciently v dry the crystals may be removed to the store ofthe saturators d d,into which thcvapor from 4o the stills` is conducted through pipes e, and the acid-tanks for supplying dilute acid to the saturators, substantially as described. 2. Theapparatusformanutacturingsulphate of ammonia, comprising; the two stills provided with coils of steam-pipe, the saturators d,`con nected with the stills and with an acid-tank7 the settlingtanks h, located between the saturators and evaporating-Iiians i. and means for drawing oft the settlings from the settlingtanks to a boiling-up tank,j, in which the settlings are 'diluted with Water and acted upon by steam to free the solution of any remaining:Q sulphate, said members beiner constructed and arranged substantially as described.

, JOHN COATES.

Vitnesses i W. H. BENNETT,

S. K. BENNETT.

1 LQ, A 

